compiler-rt/test/dfsan/basic.c

   1 // RUN: %clang_dfsan %s -o %t && %run %t
   2 //
   3 // REQUIRES: x86_64-target-arch
   4
   5 // Tests that labels are propagated through loads and stores.
   6
   7 #include <sanitizer/dfsan_interface.h>
   8 #include <assert.h>
   9
  10 int main(void) {
  11   int i = 1;
  12   dfsan_label i_label = 1;
  13   dfsan_set_label(i_label, &i, sizeof(i));
  14
  15   dfsan_label new_label = dfsan_get_label(i);
  16   assert(i_label == new_label);
  17
  18   dfsan_label read_label = dfsan_read_label(&i, sizeof(i));
  19   assert(i_label == read_label);
  20
  21   dfsan_label j_label = 2;
  22   dfsan_add_label(j_label, &i, sizeof(i));
  23
  24   read_label = dfsan_read_label(&i, sizeof(i));
  25   assert(dfsan_has_label(read_label, i_label));
  26   assert(dfsan_has_label(read_label, j_label));
  27
  28   return 0;
  29 }